待补题

SG函数:https://ac.nowcoder.com/acm/contest/5531/F

题解链接:https://ac.nowcoder.com/discuss/424000?type=101&order=0&pos=34&page=1

posted @ 2020-05-16 13:22  古比  阅读(95)  评论(0编辑  收藏  举报